Chemistry Combined Practice Problems for Term-1
Physical Chemistry
Some Basic Concepts of
Chemistry
Q1. Calculate the volume
occupied
by
3.01×10²⁵
molecules of CO² at STP.
Q2. 2 g of H² is mixed with 71
g of CL² to form HCL. Identify
LR and calculate the amount
of HCL formed.
Q3. A piece of Cu weighs 1.26
Kg. Calculate the no of
atoms.
Q7. 2g of glucose are
dissolved in 18g of water to
firm solution. Calculate mass
% of solute?
Q8.
Why
temperature
Give its units.
is
Molarity
dependent?
Q9. How much amount of
water needs to be added to
20ml of 1M koH solution so as
to get 0.1M solution?
Structure of an Atom
Q4. How much CO² Is
obtained by combustion of
0.6 g of ethane?
Q5. 0.3mg of urea is
dissolved in 250g of water to
form
solution.
Calculate
Molality.
Q6. Calculate the amount of
KOH in 500 ml of 0.2 molar
aqueous solution.
Q1. Write the value of L for
s,p,d and f subshells.
Q2. Give the significance of
psi and psi square.
Q3. Calculate the no of
electrons in K,L,M and N
shells in an atom?
Q4. Calculate the angular
momentum of electrons in
s,p,d and f subshells.
Q6. Calculate the no of
orbitals in s,p,d and f
subshells
Q5. Calculate the no of radial
and planar nodes in 2p, 4f, 4d
sub shells.
Q7. Write the values of 4
quantum numbers for the
valence electron of Na.
Inorganic Chemistry
Periodic Classification of
Elements
Q1. Arrange the following in
increasing order of Atomic
radius Li , Be & F.
Q2. Why Ionisation enthalpy
of N is greater than C and O
?
Q6. Why ionisation enthalpy
increases across the period
and decreases down the
group?
Q7. Arrange the following in
decreasing
order
of
electronegativity?
A) F , Br , Cl, I
B) O , N & F
Q3. Why atomic radius
increases down the group
and decreases across the
period?
Q4. Why F has lower electron
gain enthalpy than CL ?
Q5. What is the cause of
periodicity of elements?
Chemical Bonding
Q1. Why is ionic bond nondirectional and covalent bond
directional in nature ?
Q2. Calculate the no of Bond
Pairs { BP } and Lone Pairs {
LP } for electrons in
H²O , NH³ ,SF⁴ & XEF².
Q3. Why is ionic bond
stronger than covalent bond ?
Q4. Write three differences
between Sigma & PI Bonds.
Q5.
Why
are
ionic
compounds water soluble &
covalent compounds usually
water insoluble ?
Q6. What is Hydrogen Bond.
Write down conditions for
Hydrogen Bonding ?
Q7. Calculate Hybridisation in
H²S , SF⁶ , PH³, IF³ & XEF⁴ ?
Q8. Calculate the no of sigma
& π Bonds in the following —
Benzene , Propene & Butyne.
Q9. Calculate Bond Order in
C² , B² , O² & H² molecules.
Q10. Why is π Bond weaker
than Sigma Bond ?
Q11. Write down the general
valence
shell
electronic
configuration of S Block , P
Block & D Block Elements.
Q12. Write down M.O {
Molecular Orbital } Electronic
Configuration of F² , Be² , Li².
Q13. Why Electronegativity {
EN } increases across the
period and decreases down
the group.